nonstriater’s gists

nonstriater / gist:85f4e432d3f78110ca8d

Created May 4, 2014 06:13

正则表达式验证邮箱



	- (BOOL) validateEmail: (NSString *) candidate {
	NSString *emailRegex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";
	NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex];
	return [emailTest evaluateWithObject:candidate];
	}

nonstriater / gist:fa4dcb03b5b8087c53e9

Last active August 29, 2015 14:00

NSLocale中取出国家country信息并按照国家名字排序


	//NSLocale中取出国家country信息并按照国家名字排序

	NSLocale *locale = [[NSLocale alloc] initWithLocaleIdentifier:@"en"];
	NSArray *countryCodes = [NSLocale ISOCountryCodes];// 所有国家编码
	NSMutableArray *countriesUnsorted = [[NSMutableArray alloc] initWithCapacity:countryCodes.count];

	for (NSString *countryCode in countryCodes) {

	NSString *displayNameString = [locale displayNameForKey:NSLocaleCountryCode value:countryCode];// 获得编码对应的国家名字

nonstriater / gist:6f7f166d86d0a8cbcdb3

Created May 4, 2014 06:12

iOS 获取当前WIFI名字


	iOS 获取当前WIFI名字
	+ (NSString *)GetCurrentWifiHotSpotName {
	NSString *wifiName = nil;
	NSArray *ifs = (__bridge_transfer id)CNCopySupportedInterfaces();
	for (NSString *ifnam in ifs) {
	NSDictionary *info = (__bridge_transfer id)CNCopyCurrentNetworkInfo((__bridge CFStringRef)ifnam);
	NSLog(@"info:%@",info);
	if (info[@"SSID"]) { wifiName = info[@"SSID"]; }
	}

nonstriater / gist:222014229a113c2c2df8

Created May 4, 2014 06:12

从视频文件中获得一张图片(截图)


	从视频文件中获得一张图片(截图)

	AVURLAsset *asset = [[AVURLAsset alloc] initWithURL:url options:nil];
	AVAssetImageGenerator *gen = [[AVAssetImageGenerator alloc] initWithAsset:asset];
	gen.appliesPreferredTrackTransform = YES;
	CMTime time = CMTimeMakeWithSeconds(0.0, 600);
	NSError *error = nil;
	CMTime actualTime;
	CGImageRef image = [gen copyCGImageAtTime:time actualTime:&actualTime error:&error];

nonstriater / gist:20ddc933f6147265f6dd

Created May 4, 2014 06:11

为UIView设置圆角(小于4个角)


	为UIView设置圆角(小于4个角) UIBezi erPath + UIShapeLayer

	UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:view2.bounds byRoundingCorners:UIRectCornerBottomLeft \| UIRectCornerBottomRight cornerRadii:CGSizeMake(10, 10)]; // byRoundingCorners : 指定需要圆角的角，UIRectCorner类型
	CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];
	maskLayer.frame = view2.bounds;
	maskLayer.path = maskPath.CGPath;
	view2.layer.mask = maskLayer;

nonstriater / gist:57f7ba74aa383b9cc216

Created May 4, 2014 06:10

图片强制解压缩优化技巧


	图片优化技巧
	- (void)decompressImage:(UIImage *)image
	{
	UIGraphicsBeginImageContext(CGSizeMake(1, 1));
	[image drawAtPoint:CGPointZero];
	UIGraphicsEndImageContext();
	}
	This causes the image to decompress

nonstriater / gist:32e3179d5e8d11a5e8cb

Created May 4, 2014 06:03

sqlite3 api使用

	if (sqlite3_open([DATABASE UTF8String], &database) == SQLITE_OK)
	{
	NSString *sql = [NSString stringWithFormat:@"update lpb set %@ = '%@' where level='%@'", self.typeString, self.iconString, self.levelString];
	if (sqlite3_exec(database, [sql UTF8String], NULL, NULL, &error) != SQLITE_OK)
	NSLog(@"LPBERROR: %@ , %s",sql, error);

	sqlite3_close(database);
	}

nonstriater / gist:11107653

Last active August 29, 2015 14:00

普通字体转换成粗体

	// Returns the bold version of a font. May return nil if there is no bold version.
	UIFont RNGetBoldFontForFont(UIFont font) {
	UIFont *result = nil;

	CTFontRef ctFont = CTFontCreateWithName((__bridge CFStringRef)(font.fontName),
	font.pointSize, NULL);
	if (ctFont) {
	// You can't add bold to a bold font
	// (don't really need this, since the ctBoldFont check would handle it)
	if ((CTFontGetSymbolicTraits(ctFont) & kCTFontTraitBold) == 0) {

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